Tag Archives: water bottling plant manufacturers in india

Purified Water

What Is The Differenece Between RO and DI Water Purification?

Today, people look for different water purification systems and then often ask the difference between RO and DI water purifications. Both the water purifications are different from each other and we need to understand each technology individually.

Reverse Osmosis or commonly known as RO is the opposite of a natural process simply called osmosis. Osmosis is the natural movement of water molecules across a semipermeable membrane. The process naturally moves water from a low ion concentration to a higher ion concentration across a semipermeable membrane. This natural process is used by our bodies to get water to our individual cells.

Reverse Osmosis semipermeable membrane

By applying pressure to the more concentrated (dirtier) side of a semipermeable membrane, water molecules are pushed back across the membrane to the less concentrated (cleaner) side, resulting in more purified water. This process is called Reverse Osmosis and can typically remove 90-99% of most contaminants. Though this technique or method may not be 100% perfect, it is extremely cost effective as the RO Membrane can last for quite some times or let’s say few years if used properly and with care. Reverse Osmosis is often used to partially clean-up tap water before any other purification technology is used to remove the remaining 1-10% of contaminants.

Coming to DI water purification system or better known as Deionization has many names like Ion Exchange, Strong Acid/Strong Base, Polishing, Nuclear Grade and so on. Nuclear grade DI filters can remove inorganic chemicals down to very low parts per billon (PPB) levels. This makes them excellent for producing Ultra-Purified (Type I, 18.2 Megohm) water. Water of this quality is used with the most sensitive laboratory analytical instruments, which are designed to detect chemicals at extremely low concentration levels.

water purification system

The Deionization filters function by exchanging positive hydrogen and negative hydroxyl molecules for the positive and negative contaminant molecules in the water. Positive chemicals, like calcium, exchange places with the hydrogen molecules and negative chemicals, like iodine, exchange places with the hydroxyl molecules. Over a period of time, positive and negative contaminants in the water displace all the active hydrogen and hydroxyl molecules on the DI resin and then the filter needs replacement. Regeneration of the deionization filter is possible, but only in an industrial environment setting.

Deionization is an on-demand process supplying purified water when needed. This is important because water at this extreme purity level degrades quickly. The nuclear grade deionization resin or polishing mixed bed resin removes almost all the inorganic contaminants in the water increasing the resistivity of the water to a maximum of 18.2 megohm-cm. However, deionization alone does not remove all types of contaminants like dissolved organic chemicals. Deionization filters are not physical filters with a pore size and cannot remove bacteria or particulates.

Here, compared to RO purification system DI treatment can be expensive. In other words quickly using up the purification capacity of deionization filters can be an expensive option for labs that choose to supply tap water to UltraPure (Type I) Polishing Systems.

Today there are several tests for identifying the purity level of water. The simplest test is a direct measurement of electrical conductivity or resistivity. Most inorganic chemicals are either negatively charged (anions) or positively charged (cations), and therefore transmit an electrical current when electrodes are inserted in the water. The more ions present, the greater the conductivity, or the lower the resistivity of the sample water.

Conductivity is expressed in microsiemens/cm and is used to measure water with a large number of ions present. Resistivity is expressed in megohms-cm and is used in the measurement of water with few ions. Conductivity and resistivity are mathematical reciprocals of each other. Therefore, at 25° C, 18.2 megohm water, which is the highest purity water obtainable also, has a conductivity of 0.055 microsiemen/cm.

Remember, both RO and DI purification systems are excellent in their own ways and it solely depends on what purpose we need the purified water for.

water purification

Reasons to Start a Bottled Water Company

Today, bottled water is drinking water packaged in glass or plastic water. It can be distilled water, spring water or even mineral water depending on what packaged water one wants to manufacture. Today bottled water industry in India is thriving and no one can deny the fact that this is an evergreen business specially in developing countries.

Bottled water comes in two forms viz. carbonated water and non carbonated water. Also due to the technological advancements in water manufacturing industries, the size of packaged drinking water has a wide range. Right from single servings to large bottles to jugs, you can manufacture all. So are you looking forward to start a bottled water company? Well if you are answer is yes, then we are with you, but, if you are even a little skeptical about this business then here are the reasons as to why you should start a bottled water plant.


Water is a necessity and it has an unshaken demand. Water is always going to be in demand. It is indispensable and everybody needs water to live. This is the biggest reason why water business is known to be lucrative.

bottle water industry

Health Awareness:

Today not only in India, but in all parts of the world, there is a growing increase in health consciousness, as people are being watchful of what they eat and drink; so as to avoid ailments such as typhoid, cancer, obesity and also live longer. Hence, a corresponding need for bottled mineral water is created and one won’t be out of business.

High Profit Margins:

No one can deny the fact that every business is done with the of profit generation. Then why should packaged water be any different. Water, which is a necessity and the basic raw material for bottled water production is available for free or minimal taxes if there are any. All you need to do is drill up a bore well and once the set up is done, you have a steady supply of your raw material. Other materials like plastic can be outsourced or manufacturing and then you are done. Thus, if you compare with everything the profit margin of bottled water is quite high.

Employment Generation:

The whole process of producing bottled water is not a task for any one individual in particular. You will be the one creating jobs as you will have to employ people that will help you with various tasks right from cleaning the containers to operating the machines to distributing the bottled water and loading the distribution trucks or vans and many more such tasks. So, you become someone who generates employment for many people.

bottled water manufacturing

That’s why, today in India, right from large cities to small towns, bottled water industry is something that is a critical component of nation’s economy and infrastructure. The sale and manufacture of bottled water not only acts as a job creator but also contributes to the economy as a whole via the industry’s ripple effect thus benefiting the agriculture, manufacturing, construction, transportation and many other businesses and industries whose livelihood depends on the bottled water industry.